Version History for U.S. Geological Survey Scientific Investigations Report 2017-5075

By Lisa A. Senior

Estimated Fecal Coliform Bacteria Concentrations Using Near Real-Time Continuous Water-Quality and Streamflow Data From Five Stream Sites in Chester County, Pennsylvania, 2007—16 

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Posted online September 15, 2017

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Revised and reposted April 21, 2023 as version 1.1

On page 22, in the section, "Site-Specific Regressions," in the third paragraph, the last sentence: 
 
The regression analysis yielded coefficients for the seasonality variables that result in peaks occurring in late July (Julian Day) for the White Clay Creek and three Brandywine Creek stream sites and in September for the French Creek stream site (fig. 9).
 
changed to 
 
The regression analysis yielded coefficients for the seasonality variables that result in peaks occurring in late July to early August (Julian Day 203—219) for the White Clay Creek and three Brandywine Creek stream sites and in September (Julian Day 274) for the French Creek stream site (fig. 9).

In Figure 9, the first entry in the Explanation: 
 
East Branch Brandywine Creek at Modena
 
changed to 
 
West Branch Brandywine Creek at Modena

The second entry in the Explanation: 
 
West Branch Brandywine Creek at Chadds Ford
 
changed to 
 
East Branch Brandywine Creek below Downingtown
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Revised and reposted March 27, 2024 as version 1.2

On page 24, in figure 10A, the coefficient for the log(Turb)term in the regression equation for site 01480617 West Branch Creek at Modena was 0.8581. 0.8581

changed to

0.7581

On the second page of Appendix 1, the coefficient for the log(Turb) term in the regression equation for site 01480617 West Branch Creek at Modena was changed from 0.8581. 0.8581

changed to

0.7581